By the way, here a friend told a story... her son goes to the preparatory class in front of the school. So the teacher told: asked the children a question, and then the boy called to the board, said, knows the answer. I went out, I wrote it right. She praised him, and he let’s blow off at the board... And then all the kids picked up – stood up, and also started dancing... And the teacher then at the parental gathering: “There are 20 dancing kids...what should I do with them?and "